Use canonical format for MSVS project/solution files

Use the same format as is used by MSVS itself to avoid spurious changes when
modifying the files. Notably:

- Use DOS end of line format (0D 0A).
- Add UTF-8 BOM (EF BB BF) to the beginning of the files.
- Do not put CR LF at the end of the last line in the file.

Closes https://github.com/wxWidgets/wxWidgets/pull/440

utils/ifacecheck/src/ifacecheck_vc7.sln

@@ -1,3 +1,4 @@
+
 Microsoft Visual Studio Solution File, Format Version 8.00
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ifacecheck", "ifacecheck_vc7.vcproj", "{355B6651-9A8E-5D72-A3E9-DAB21650C0FC}"
 EndProject

utils/ifacecheck/src/ifacecheck_vc8.sln

@@ -1,3 +1,4 @@
+
 Microsoft Visual Studio Solution File, Format Version 9.00
 # Visual Studio 2005
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ifacecheck", "ifacecheck_vc8.vcproj", "{82C85703-712C-59F7-9E08-9F8EDE5D9DDF}"

utils/ifacecheck/src/ifacecheck_vc9.sln

@@ -1,3 +1,4 @@
+
 Microsoft Visual Studio Solution File, Format Version 10.00
 # Visual Studio 2008
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ifacecheck", "ifacecheck_vc9.vcproj", "{C15BEEE5-A7F4-59AF-88F0-B9C94DFA8EAA}"