Ctrl-Button1 now has a relative drag using the XC_fleur cursor.
XC_fleur is normally the cursor for "size all" action, which has 4
arrows pointing to 4 directions.
Co-authored-by: NRK <nrk@disroot.org>
* Remove non-POSIX extensions and commands
* Drop autodetection in favor of OPT_DEP_DEFAULT
* Use += for LDLIBS as some BSD distros need to add extra flags
* Change DOCPREFIX -> EGPREFIX
* Use ?= for MANPREFIX and EGPREFIX
* Update docs
With this, we should have a stable build system. No further significant
changes should be needed.