[PATCH] Start a detached process without prefixing cmd.exe

[Vincent van Ravesteijn]

 The attached patches fix the problem that we have to use cmd.exe
prefix to start a detached process with environment variables using
QProcess.

I have checked that
- batch files still work,
- the environment variable TEXINPUTS is correctly set when querying
from the batch file or from an executable.

Please review this code. Maybe some special thing has to be done on Cygwin.

Vincent

0001-Factor-out-latexEnv.patch
Description: Binary data

0002-Do-not-show-cmd-window-when-viewing-on-Windows.patch
Description: Binary data