pcre: bump version

package/pcre/pcre.mk

@@ -3,7 +3,7 @@
 # PCRE
 #
 #############################################################
-PCRE_VERSION = 7.6
+PCRE_VERSION = 7.7
 PCRE_SOURCE = pcre-$(PCRE_VERSION).tar.bz2
 PCRE_SITE = ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre
 PCRE_INSTALL_STAGING = YES