MFH: r418990

Mk/Uses/tcl.mk: fix stage-qa linking error.

• If a port links to libtk then it will always also link to libtcl. Include libtcl in the LIB_DEPENDS when linking to libtk.
• Fix indentation of '.if' statements

PR: 211261
Approved by: ports-secteam (feld), gahr