qt4: move functions from python to shell style

qt4: move functions from python to shell style

In qt4's do_configure operation, it will refer to some variables that
are derived from 'd', however these variable values may be not correct
in multilib case since the extraction of these variables happens before
the multilib handler.

The fix is to move these python style functions back to shell style.

This fixes [YOCTO #2355]

[RP: Fix whitepace]
(From OE-Core rev: 977ba301a1063a84b865ddf7367c35827fbffc86)

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>