Fix include, part of bug919.

Makefile.in

@@ -425,7 +425,7 @@ ftp: info
 install-msg:
 	@echo "Installed!"
 	@echo
-	@echo "Fod documentation see 'man verilator' or 'verilator --help'"
+	@echo "For documentation see 'man verilator' or 'verilator --help'"
 	@echo "For forums and to report bugs see http://www.veripool.org/verilator"
 	@echo
 

verilator.pc.in

@@ -10,4 +10,4 @@ URL: http://www.veripool.org/verilator
 Version: @PACKAGE_VERSION@
 Requires:
 Libs:
-Cflags: -I${includedir}
+Cflags: -I${includedir} -I${includedir}/vltstd