Fix build with TCL 8.6.
Build with TCL 8.6.
Kill register keyword in gperf output to allow building with -Werror and
clang.
Needs itstool.
Fix build with TCL 8.6. Honour system CFLAGS. Bump revision.
Fix build with TCL 8.6.
Fix build against TCL 8.6.
Fix build with TCL 8.6.
Allow TCL 8.6.
Allow build with TCL 8.6. Needs more work as it fails in the install
phase.
Honour system CFLAGS. Fix build with TCL 8.6. Bump revision.
Adjust TCL version.