Revert "gcc: Use FILESPATH instead of FILESDIR and cleanup/simplify"

This reverts commit 90616875b4. It was
never meant to be applied as its an incorrect previous development
verison of a patch in progress.

meta/recipes-devtools/gcc/gcc-4.7.inc

@@ -18,6 +18,8 @@ PV = "4.7.2"
 
 BINV = "4.7.2"
 
+FILESPATH = "${@base_set_filespath([ '${FILE_DIRNAME}/gcc-4.7' ], d)}"
+
 DEPENDS =+ "mpfr gmp libmpc"
 NATIVEDEPS = "mpfr-native gmp-native libmpc-native zlib-native"
 

meta/recipes-devtools/gcc/gcc-common.inc

@@ -7,7 +7,7 @@ NATIVEDEPS = ""
 
 inherit autotools gettext
 
-FILESPATH = "${FILE_DIRNAME}/gcc-${PV}"
+FILESDIR = "${@os.path.dirname(d.getVar('FILE',1))}/gcc-${PV}"
 
 def get_gcc_fpu_setting(bb, d):
     if d.getVar('ARMPKGSFX_EABI', True) == "hf" and d.getVar('TRANSLATED_TARGET_ARCH', True) == "arm":