Avoid building packages requiring WCHAR, when not enabled

package/coreutils/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_COREUTILS
 	bool "coreutils"
 	default n
+	depends on BR2_USE_WCHAR
 	help
 	  All of the basic file/text/shell utilities.  These are the 
 	  core utilities which are expected to exist on every system.  

package/findutils/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_FINDUTILS
 	bool "findutils"
 	default n
+	depends on BR2_USE_WCHAR
 	help
 	  Basic directory searching utilities.  Provides the 
 	  common 'find', 'xargs', 'locate', and 'updatedb' binaries.

package/gawk/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_GAWK
 	bool "gawk"
 	default n
+	depends on BR2_USE_WCHAR
 	help
 	  A special-purpose programming language which is data driven 
 	  rather than procedural.  Allows for simple data-reformatting jobs 

package/sed/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_SED
 	bool "sed"
 	default n
+	depends on BR2_USE_WCHAR
 	help
 	  Super-useful stream editor.
 

package/tar/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_TAR
 	bool "tar"
 	default n
+	depends on BR2_USE_WCHAR
 	help
 	  A program that saves many files together into a single tape or disk 
 	  archive, and can restore individual files from the archive.