Adjust out-of range error to be a warning on ppc

AKA <rdar://problem/9610466> for ppc

https://trac.macports.org/ticket/46801

--- src/ld/OutputFile.cpp
+++ src/ld/OutputFile.cpp
@@ -625,7 +625,7 @@ void OutputFile::rangeCheckAbsolute32(int64_t displacement, ld::Internal& state,
 		// is encoded in mach-o the same as:
 		//  .long _foo + 0x40000000
 		// so if _foo lays out to 0xC0000100, the first is ok, but the second is not.  
-		if ( (_options.architecture() == CPU_TYPE_ARM) || (_options.architecture() == CPU_TYPE_I386) ) {
+		if ( (_options.architecture() == CPU_TYPE_ARM) || (_options.architecture() == CPU_TYPE_I386) || (_options.architecture() == CPU_TYPE_POWERPC) ) {
 			// Unlikely userland code does funky stuff like this, so warn for them, but not warn for -preload or -static
 			if ( (_options.outputKind() != Options::kPreload) && (_options.outputKind() != Options::kStaticExecutable) ) {
 				warning("32-bit absolute address out of range (0x%08llX max is 4GB): from %s + 0x%08X (0x%08llX) to 0x%08llX",