xbps-src: environment: set CFLAGS and LDFLAGS for the bootstrap case.

Fixes building bootstrap packages that need to find libs in masterdir
and not from the host.

common/environment/build/bootstrap.sh

@@ -0,0 +1 @@
+../configure/bootstrap.sh

common/environment/configure/bootstrap.sh

@@ -0,0 +1,4 @@
+if [ -z "$CHROOT_READY" ]; then
+	CFLAGS="-I${XBPS_MASTERDIR}/usr/include"
+	LDFLAGS="-L${XBPS_MASTERDIR}/usr/lib"
+fi

srcpkgs/libcap/template

@@ -14,8 +14,6 @@ checksum=cee4568f78dc851d726fc93f25f4ed91cc223b1fe8259daa4a77158d174e6c65
 
 if [ "$CHROOT_READY" ]; then
 	hostmakedepends="gperf perl"
-else
-	LDFLAGS="-L${XBPS_MASTERDIR}/usr/lib"
 fi
 
 do_configure() {