wflinfo: call get_proc_address after make_current

WGL requires that an active context is available as wglGetProcAddress
is called otherwise the function pointer returned will be NULL.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
man: spelling fix

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Revert "api: make dl_can_open() dl_sym() display dependent"

This reverts commit e287d3952e9e74f9bb30ba3c0f37af117c0efc51.

No API breaks thank you. It does not make sense (gives false assurance)
for dl* function to depend on the display.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

Conflicts:
	src/utils/wflinfo.c
wgl: opengl32.dll always provides symbols for all GL APIs

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>