Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>

If $font is not set, the default font is constructed from font data linked into every libdraw binary. That process was different from the usual openfont code, and so it was not hidpi-aware, resulting in very tiny fonts out of the box on hidpi systems, until users set $font. Fix this by using openfont to construct the default font, by recognizing the name *default* when looking for font and subfont file contents. Then all the hidpi scaling applies automatically. As a side effect, the concept of a 'default subfont' is gone, as are display->defaultsubfont, getdefont, and memgetdefont.

Makes loading faster, and makes larger sizes not too wide. Change-Id: I076c83fdb9577c1e596de45558f38ea93e3a2a31 Reviewed-on: https://plan9port-review.googlesource.com/1360 Reviewed-by: Russ Cox <rsc@swtch.com>

acme -f nosuchfont Change-Id: Iaa727db02b43e63082130796ec97c0efb7fe2b19 Reviewed-on: https://plan9port-review.googlesource.com/1220 Reviewed-by: Russ Cox <rsc@swtch.com>

Change-Id: Id1e6a2630713024a1925ad1341bb9c846f82e93e Reviewed-on: https://plan9port-review.googlesource.com/1171 Reviewed-by: Russ Cox <rsc@swtch.com>

Change-Id: I6093955b222db89dfe437fb723593b173d888d01 Reviewed-on: https://plan9port-review.googlesource.com/1170 Reviewed-by: Russ Cox <rsc@swtch.com>

An experiment. Change-Id: I40660a211b8372701597d80f7e86917e94cccbaa Reviewed-on: https://plan9port-review.googlesource.com/1161 Reviewed-by: Russ Cox <rsc@swtch.com>

More changes.