toolchain/crosstool-NG: update to 1.13.2

crosstool-NG 1.13.2 contains an important fix related to building
the ncurses libraries: the latest ncurses version requires tic to
be either in ${TIC_PATH}, or to be exactly /usr/bin/tic.

Also contains a few minor fixes:
 - CLooG extraction
 - prescott is a i686

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/crosstool-ng/crosstool-ng.mk

@@ -1,4 +1,4 @@
-CROSSTOOL_NG_VERSION           = 1.13.1
+CROSSTOOL_NG_VERSION           = 1.13.2
 CROSSTOOL_NG_SOURCE            = crosstool-ng-$(CROSSTOOL_NG_VERSION).tar.bz2
 CROSSTOOL_NG_SITE              = http://crosstool-ng.org/download/crosstool-ng/
 CROSSTOOL_NG_INSTALL_STAGING   = NO