Document the TARGET options in Qt4 macros.

Feature introduced in commit 9ce60ff5 (Qt4Macros: Allow specifying
a TARGET in invokations of macros., 2013-02-26).
allow to mark a test as "Not Run" with a specific return code (#8466)
bootstrap: improve ld flag for Linux/HPPA builds

Follow up commit ca63bb10 (bootstrap: try better workaround for builds
on Linux/HPPA, 2013-09-12) with an improved ld flag.

Suggested-by: Guy Martin
Merge topic 'doc-Qt-macro-TARGET-arg'

4608a260 Document the TARGET options in Qt4 macros.
Merge topic 'hppa-bootstrap'

b22a0f15 bootstrap: improve ld flag for Linux/HPPA builds
Merge topic 'skip-return-code'

3a0d164b allow to mark a test as "Not Run" with a specific return code (#8466)
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