fix(bcc): change lib32 to lib according to gentoo changes

Author: mycoboco

bcc/linux-x86-64/beluga.h

@@ -7,10 +7,10 @@
 "-D__linux__",
 "-D__gnuc_va_list=va_list",
 "$1",
-"--include-builtin=/usr/local/lib32/bcc/include",
-"--include-builtin=/usr/local/lib32/bcc/gcc/include",
+"--include-builtin=/usr/local/lib/bcc/include",
+"--include-builtin=/usr/local/lib/bcc/gcc/include",
 "--include-builtin=/usr/local/include",
-"--include-builtin=/usr/local/lib32/bcc/gcc/include-fixed",
+"--include-builtin=/usr/local/lib/bcc/gcc/include-fixed",
 "--include-builtin=/usr/include",
 "--target=x86-linux",
 "-v",

bcc/linux-x86-64/ld.h

@@ -1,18 +1,18 @@
 "/usr/bin/ld",
 "-m", "elf_i386",
 "-dynamic-linker", "/lib/ld-linux.so.2",
-"/usr/lib32/crt1.o",
-"/usr/lib32/crti.o",
-"/usr/local/lib32/bcc/gcc/32/crtbegin.o",
-"-L/usr/local/lib32/bcc/gcc/32",
-"-L/usr/lib32",
-"-L/lib32",
+"/usr/lib/crt1.o",
+"/usr/lib/crti.o",
+"/usr/local/lib/bcc/gcc/32/crtbegin.o",
+"-L/usr/local/lib/bcc/gcc/32",
+"-L/usr/lib",
+"-L/lib",
 "-L/usr/x86_64-pc-linux-gnu/lib",
 "-L/usr/lib",
 "$2",
 "-lc",
-"/usr/local/lib32/bcc/gcc/32/crtend.o",
-"/usr/lib32/crtn.o",
+"/usr/local/lib/bcc/gcc/32/crtend.o",
+"/usr/lib/crtn.o",
 "-o", "$3",
 "$1",
-"/usr/local/lib32/bcc/xfloat.o",
+"/usr/local/lib/bcc/xfloat.o",