Specify suffix as bdwgc as Unity expects this.

We previusly built a distinct version of Mono with our newer Boehm GC.
To avoid conflicting with Mono we renamed it bdwgc. Now that we have
upstreamed the boehm support in Mono to use our GC fork, we just
build the Mono Boehm target. However, Unity is still expecting libraries
with a -bdwgc suffix. Build the library with the expected suffix on
Windows rather than renaming to avoid issues with symbols.

Author: joncham

external/buildscripts/build_win_no_cygwin.pl

@@ -126,9 +126,9 @@
 	my $archNameForBuild = $arch32 ? 'Win32' : 'x64';
 	my $configDirName = $debug ? "Debug" : "Release";
 
-	copy("$monoroot/msvc/build/boehm/$archNameForBuild/bin/$configDirName/mono-boehm.exe", "$monoprefix/bin/mono-bdwgc.exe") or die ("failed copying mono-bdwgc.exe\n");
-	copy("$monoroot/msvc/build/boehm/$archNameForBuild/bin/$configDirName/mono-2.0-boehm.dll", "$monoprefix/bin/mono-2.0-bdwgc.dll") or die ("failed copying mono-2.0-bdwgc.dll\n");
-	copy("$monoroot/msvc/build/boehm/$archNameForBuild/bin/$configDirName/mono-2.0-boehm.pdb", "$monoprefix/bin/mono-2.0-bdwgc.pdb") or die ("failed copying mono-2.0-bdwgc.pdb\n");
+	copy("$monoroot/msvc/build/boehm/$archNameForBuild/bin/$configDirName/mono-bdwgc.exe", "$monoprefix/bin/mono-bdwgc.exe") or die ("failed copying mono-bdwgc.exe\n");
+	copy("$monoroot/msvc/build/boehm/$archNameForBuild/bin/$configDirName/mono-2.0-bdwgc.dll", "$monoprefix/bin/mono-2.0-bdwgc.dll") or die ("failed copying mono-2.0-bdwgc.dll\n");
+	copy("$monoroot/msvc/build/boehm/$archNameForBuild/bin/$configDirName/mono-2.0-bdwgc.pdb", "$monoprefix/bin/mono-2.0-bdwgc.pdb") or die ("failed copying mono-2.0-bdwgc.pdb\n");
 
 	copy("$monoroot/msvc/build/sgen/$archNameForBuild/bin/$configDirName/mono-sgen.exe", "$monoprefix/bin/.") or die ("failed copying mono-sgen.exe\n");
 	copy("$monoroot/msvc/build/sgen/$archNameForBuild/bin/$configDirName/mono-2.0-sgen.dll", "$monoprefix/bin/.") or die ("failed copying mono-2.0-sgen.dll\n");

msvc/mono.props

@@ -70,7 +70,7 @@
     <BOEHM_DEFINES>HAVE_BOEHM_GC</BOEHM_DEFINES>
     <GC_DEFINES>$(BOEHM_DEFINES)</GC_DEFINES>
     <GC_LIB>libgc.lib</GC_LIB>
-    <MONO_TARGET_SUFFIX Condition="'$(MONO_USE_TARGET_SUFFIX)'=='true'">-boehm</MONO_TARGET_SUFFIX>
+    <MONO_TARGET_SUFFIX Condition="'$(MONO_USE_TARGET_SUFFIX)'=='true'">-bdwgc</MONO_TARGET_SUFFIX>
     <MONO_BUILD_DIR_PREFIX Condition="'$(MONO_USE_SEPARATE_BUILD_DIR)'=='true'">$(MONO_BUILD_DIR_PREFIX)boehm/</MONO_BUILD_DIR_PREFIX>
   </PropertyGroup>
   <PropertyGroup Label="Static-Mono-Libraries">