Rename methods called from libcurl to use more clear names

Indicate that they're callbacks used by libcurl rather than normal
methods used by the application code itself.

No real changes.

src/common/webrequest_curl.cpp

@@ -45,14 +45,14 @@ static size_t wxCURLWriteData(void* buffer, size_t size, size_t nmemb, void* use
 {
     wxCHECK_MSG( userdata, 0, "invalid curl write callback data" );
 
-    return static_cast<wxWebResponseCURL*>(userdata)->WriteData(buffer, size * nmemb);
+    return static_cast<wxWebResponseCURL*>(userdata)->CURLOnWrite(buffer, size * nmemb);
 }
 
 static size_t wxCURLHeader(char *buffer, size_t size, size_t nitems, void *userdata)
 {
     wxCHECK_MSG( userdata, 0, "invalid curl header callback data" );
 
-    return static_cast<wxWebResponseCURL*>(userdata)->AddHeaderData(buffer, size * nitems);
+    return static_cast<wxWebResponseCURL*>(userdata)->CURLOnHeader(buffer, size * nitems);
 }
 
 wxWebResponseCURL::wxWebResponseCURL(wxWebRequestCURL& request) :
@@ -64,7 +64,7 @@ wxWebResponseCURL::wxWebResponseCURL(wxWebRequestCURL& request) :
     Init();
 }
 
-size_t wxWebResponseCURL::WriteData(void* buffer, size_t size)
+size_t wxWebResponseCURL::CURLOnWrite(void* buffer, size_t size)
 {
     void* buf = GetDataBuffer(size);
     memcpy(buf, buffer, size);
@@ -72,7 +72,7 @@ size_t wxWebResponseCURL::WriteData(void* buffer, size_t size)
     return size;
 }
 
-size_t wxWebResponseCURL::AddHeaderData(const char * buffer, size_t size)
+size_t wxWebResponseCURL::CURLOnHeader(const char * buffer, size_t size)
 {
     // HTTP headers are supposed to only contain ASCII data, so any encoding
     // should work here, but use Latin-1 for compatibility with some servers
@@ -148,7 +148,7 @@ static size_t wxCURLRead(char *buffer, size_t size, size_t nitems, void *userdat
 {
     wxCHECK_MSG( userdata, 0, "invalid curl read callback data" );
 
-    return static_cast<wxWebRequestCURL*>(userdata)->ReadData(buffer, size * nitems);
+    return static_cast<wxWebRequestCURL*>(userdata)->CURLOnRead(buffer, size * nitems);
 }
 
 wxWebRequestCURL::wxWebRequestCURL(wxWebSession & session,
@@ -282,7 +282,7 @@ wxString wxWebRequestCURL::GetError() const
     return wxString(m_errorBuffer, wxConvWhateverWorks);
 }
 
-size_t wxWebRequestCURL::ReadData(char* buffer, size_t size)
+size_t wxWebRequestCURL::CURLOnRead(char* buffer, size_t size)
 {
     if ( m_dataStream )
     {