Change documentation references from OS X to macOS (#1927)

Since OS X 10.12 it has been named macOS so it makes sense
to reference it in documentation as such, even when it
sometimes refers to older versions which were called (Mac) OS X.

interface/wx/glcanvas.h

@@ -144,7 +144,7 @@ class wxGLAttributes : public wxGLAttribsBase
 public:
     /**
         Use true colour instead of colour index rendering for each pixel.
-        It makes no effect for OS X.
+        It makes no effect for macOS.
     */
     wxGLAttributes& RGBA();
 
@@ -158,7 +158,7 @@ public:
     wxGLAttributes& BufferSize(int val);
 
     /**
-        Specifies the framebuffer level. It makes no effect for OS X.
+        Specifies the framebuffer level. It makes no effect for macOS.
 
         @param val
         0 for main buffer, >0 for overlay, <0 for underlay.
@@ -246,7 +246,7 @@ public:
     wxGLAttributes& Samplers(int val);
 
     /**
-        Used to request a frame buffer sRGB capable. It makes no effect for OS X.
+        Used to request a frame buffer sRGB capable. It makes no effect for macOS.
     */
     wxGLAttributes& FrameBuffersRGB();
 
@@ -315,7 +315,7 @@ public:
         @param val
         The major version number requested.
 
-        It has no effect under OS X where specifying CoreProfile() will
+        It has no effect under macOS where specifying CoreProfile() will
         result in using OpenGL version at least 3.2.
     */
     wxGLContextAttrs& MajorVersion(int val);
@@ -326,7 +326,7 @@ public:
         @param val
         The minor version number requested, e.g. 2 if OpenGL 3.2 is requested.
 
-        It has no effect under OS X where specifying CoreProfile() will
+        It has no effect under macOS where specifying CoreProfile() will
         result in using OpenGL version at least 3.2.
     */
     wxGLContextAttrs& MinorVersion(int val);
@@ -340,7 +340,7 @@ public:
         @param vminor
         The minor version number requested, e.g. 5 if OpenGL 4.5 is requested.
 
-        It has no effect under OS X where specifying CoreProfile() will
+        It has no effect under macOS where specifying CoreProfile() will
         result in using OpenGL version at least 3.2.
     */
     wxGLContextAttrs& OGLVersion(int vmayor, int vminor);
@@ -358,7 +358,7 @@ public:
         later. They must not support functionality marked as deprecated or
         removed by the requested version of the OpenGL API.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& ForwardCompatible();
 
@@ -367,7 +367,7 @@ public:
         subsets of OpenGL, lacking some features of the full specification.
         Used mainly in embedded devices such as mobile phones.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& ES2();
 
@@ -376,7 +376,7 @@ public:
         some logs are enabled and also allows OGL to send debug messages through
         a callback function.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& DebugCtx();
 
@@ -384,14 +384,14 @@ public:
         Request robustness, or how OpenGL handles out-of-bounds buffer object
         accesses and graphics reset notification behaviours.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& Robust();
 
     /**
         With robustness enabled, never deliver notification of reset events.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& NoResetNotify();
 
@@ -399,7 +399,7 @@ public:
         With robustness enabled, if graphics reset happens, all context state is
         lost.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& LoseOnReset();
 
@@ -407,7 +407,7 @@ public:
         Request OpenGL to protect other applications or shared contexts from reset
         side-effects.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& ResetIsolation();
 
@@ -419,7 +419,7 @@ public:
         @param val
         0 for not flushing, 1 (wxWidgets default) for flushing pending commands.
 
-        It has no effect under OS X.
+        It has no effect under macOS.
     */
     wxGLContextAttrs& ReleaseFlush(int val = 1);
 
@@ -620,7 +620,7 @@ enum
         This attribute should be followed by the major version number
         requested.
 
-        It has no effect under OS X where specifying ::WX_GL_CORE_PROFILE will
+        It has no effect under macOS where specifying ::WX_GL_CORE_PROFILE will
         result in using OpenGL version at least 3.2 but can still be used
         there for portability.
 
@@ -769,7 +769,7 @@ enum
     parameter) but it's discouraged.
 
     @note
-        On those platforms which use a configure script (e.g. Linux and OS X)
+        On those platforms which use a configure script (e.g. Linux and macOS)
         OpenGL support is automatically enabled if the relative headers and
         libraries are found.
         To switch it on under the other platforms (e.g. Windows), you need to edit