fix variable name

- MASTER_SITES -> PKG_SITES
- make libc boolean, makes no sense as package

package/glibc/Config.in

@@ -1,6 +1,6 @@
 config ADK_PACKAGE_GLIBC
 	prompt "glibc............................... GNU C library"
-	tristate
+	bool
 	default y if ADK_TARGET_LIB_GLIBC
 	default n
 	depends on ADK_TARGET_LIB_GLIBC

package/uclibc/Config.in

@@ -1,6 +1,6 @@
 config ADK_PACKAGE_UCLIBC
 	prompt "uClibc............................... embedded C library"
-	tristate
+	bool
 	default y if ADK_TARGET_LIB_UCLIBC
 	default n
 	depends on ADK_TARGET_LIB_UCLIBC

toolchain/binutils/Makefile.inc

@@ -7,5 +7,5 @@ PKG_NAME:=		binutils
 PKG_VERSION:=		2.19.1
 PKG_RELEASE:=		1
 PKG_MD5SUM:=		09a8c5821a2dfdbb20665bc0bd680791
-MASTER_SITES:=		${MASTER_SITE_GNU:=binutils/}
+PKG_SITES:=		${MASTER_SITE_GNU:=binutils/}
 DISTFILES:=		$(PKG_NAME)-$(PKG_VERSION).tar.bz2

toolchain/gcc/Makefile.inc

@@ -7,5 +7,5 @@ PKG_NAME:=		gcc
 PKG_VERSION:=		4.4.0
 PKG_RELEASE:=		1
 PKG_MD5SUM:=		cf5d787bee57f38168b74d65a7c0e6fd
-MASTER_SITES:=		${MASTER_SITE_GNU:=gcc/gcc-${PKG_VERSION}/}
+PKG_SITES:=		${MASTER_SITE_GNU:=gcc/gcc-${PKG_VERSION}/}
 DISTFILES:=		$(PKG_NAME)-$(PKG_VERSION).tar.bz2

toolchain/mpfr/Makefile.inc

@@ -7,5 +7,5 @@ PKG_NAME:=		mpfr
 PKG_VERSION:=		2.4.1
 PKG_RELEASE:=		1
 PKG_MD5SUM:=		c5ee0a8ce82ad55fe29ac57edd35d09e
-MASTER_SITES:=		http://www.mpfr.org/mpfr-current/
+PKG_SITES:=		http://www.mpfr.org/mpfr-current/
 DISTFILES:=		$(PKG_NAME)-$(PKG_VERSION).tar.bz2

toolchain/uClibc/Makefile.inc

@@ -7,5 +7,5 @@ PKG_NAME:=		uClibc
 PKG_VERSION:=		0.9.30.1
 PKG_RELEASE:=		1
 PKG_MD5SUM:=		1a4b84e5536ad8170563ffa88c34679c
-MASTER_SITES:=		http://uclibc.org/downloads/
+PKG_SITES:=		http://uclibc.org/downloads/
 DISTFILES:=		$(PKG_NAME)-$(PKG_VERSION).tar.bz2