msys2-runtime: disable stripping msys2-runtime-devel

My theory for msys2/msys2-pacman#52 is that the logic for identifying files that need to be stripped is picking up the .debug files, resulting the the debug info being stripped from them.  Try not stripping msys2-runtime-devel to see if the debug info is intact.

msys2-runtime/PKGBUILD

@@ -237,6 +237,7 @@ package_msys2-runtime-devel() {
   depends=("msys2-runtime=${pkgver}")
   conflicts=('libcatgets-devel' 'msys2-runtime-3.4-devel' 'msys2-runtime-3.5-devel')
   replaces=('libcatgets-devel' 'msys2-runtime-3.5-devel')
+  options=('!strip')
 
   mkdir -p "${pkgdir}"/usr/bin
   cp -rLf "${srcdir}"/dest/usr/${CHOST}/include "${pkgdir}"/usr/