graphics/pinta: Fix build against mono 4.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

graphics/pinta/pinta.SlackBuild

@@ -70,6 +70,11 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
+# update the project and solution files for mono4
+# Thanks to Fedora Project
+find . -name "*.sln" -print -exec sed -i 's/Format Version 10.00/Format Version 11.00/g' {} \;
+find . \( -name "*.csproj" -o -name "*.proj" \) -print -exec sed -i 's#ToolsVersion="3.5"#ToolsVersion="4.0"#g; s#<TargetFrameworkVersion>.*</TargetFrameworkVersion>##g; s#<PropertyGroup>#<PropertyGroup><TargetFrameworkVersion>v4.5</TargetFrameworkVersion>#g; s#Mono.Posix, Version.*"#Mono.Posix"#g' {} \;
+
 CFLAGS="$SLKCFLAGS" \
 ./configure \
   --prefix=/usr \