#3009 unixfont-5.11 hang

[Don Porter]

In an --enable-aqua build of Tk8.6b3, the test suite
hangs up in test unixfont-5.11 when building and
testing on Snow Leopard. Spinning rainbow ball.

At least once when I left it hang long enough, I got
printed to the console terminal a series messages
like this:

tktest(30053,0x7fff70636cc0) malloc: *** auto malloc[30053]: agc error: Can not allocate new region

[Don Porter]

Hangs in the command

.b.l config -text "000000" -wrap 1

[Don Porter]

Minimum hang in an interactive wish:

% label .l -text 000000 -wrap 1

[Don Porter]

Tk_MeasureChars() is not honoring the TK_AT_LEAST_ONE flag.

[Don Porter]

fixed on trunk