Make jam print the commandline it's executing.
Only useful for ebuild debugging - I just always forget how to enable it.
--- ftjam-2.5.3rc2-orig/builds/unix/Makefile.in+++ ftjam-2.5.3rc2/builds/unix/Makefile.in@@ -16,7 +16,7 @@all: jam0
chmod a+w jambase.c
- ./jam0+ ./jam0 -dx -qinclude common.mk