gcc: include plugin-related headers into packaged SDK

Include headers necessary to compile gcc plugins into cross-canadian gcc
packages.

(From OE-Core rev: d12aa92b3dac1109d510e7b6f74055d1ab927817)

(From OE-Core rev: 51c96c98fca5a4a51cb38a6442ab9b4a03938721)

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-4.5.1.inc

@@ -1,6 +1,6 @@
 require gcc-common.inc
 
-PR = "r9"
+PR = "r10"
 
 DEPENDS =+ "mpfr gmp libmpc elfutils"
 NATIVEDEPS = "mpfr-native gmp-native gettext-native libmpc-native elfutils-native"

meta/recipes-devtools/gcc/gcc-4.6.inc

@@ -1,6 +1,6 @@
 require gcc-common.inc
 
-PR = "r10"
+PR = "r11"
 
 # Third digit in PV should be incremented after a minor release
 # happens from this branch on gcc e.g. currently its 4.6.0

meta/recipes-devtools/gcc/gcc-package-sdk.inc

@@ -13,6 +13,7 @@ FILES_${PN} = "\
     ${gcclibdir}/${TARGET_SYS}/${BINV}/lib* \
     ${gcclibdir}/${TARGET_SYS}/${BINV}/include \
     ${gcclibdir}/${TARGET_SYS}/${BINV}/include-fixed \
+    ${gcclibdir}/${TARGET_SYS}/${BINV}/plugin/include/ \
     ${includedir}/c++/${BINV} \
     ${prefix}/${TARGET_SYS}/bin/* \
     ${prefix}/${TARGET_SYS}/lib/* \