MathLib:isHex(): fix detection of missing suffixes (U,L).
daca: count varid 0 occurences per file.
Update the detection of the arguments in Qt's invokeMethod.

invokeMethod can invoke functions by name (string) rather than a
direct function call (i.e. reflection). The old code wasn't
correctly parsing out the argument which contained the name
of the function to call.

This resulted in that function being reported as unused when it is.
Tidy up the code for cppcheck style.
astyle formatting
Partial fix for #5555. Remember function attributes: pure, const, constructor, destructor
Partial fix for #5555. Add const,pure attributes to library.
Merge pull request #263 from trulabs/master

Fix the detection of methods called from Qt's invokeMethod
Merge pull request #262 from matthiaskrgr/daca_cnt_varid0

daca: count varid 0 occurences per file
MathLib: replaced isHexDigit function by isxdigit.
Added function MathLib::isValidSuffix()
Merge pull request #261 from orbitcowboy/master

MathLib:isHex(): fix detection of missing suffixes (U,L).
Run astyle
Remove redundant code
Use simple match where possible

Fixes these warnings found by "--enable=internal":

[lib/checkclass.cpp:972]: (warning) Found simple pattern inside Token::Match() call: "* *"
[lib/checkbufferoverrun.cpp:635]: (warning) Found simple pattern inside Token::Match() call: "."
[lib/checkbufferoverrun.cpp:1397]: (warning) Found simple pattern inside Token::Match() call: ";"
[lib/checksizeof.cpp:299]: (warning) Found simple pattern inside Token::Match() call: "."
[lib/checksizeof.cpp:301]: (warning) Found simple pattern inside Token::Match() call: ")"
[lib/checksizeof.cpp:303]: (warning) Found simple pattern inside Token::Match() call: "]"
[lib/checksizeof.cpp:318]: (warning) Found simple pattern inside Token::Match() call: ")"
[lib/checknullpointer.cpp:413]: (warning) Found simple pattern inside Token::Match() call: "delete"
[lib/checkio.cpp:1336]: (warning) Found simple pattern inside Token::Match() call: "> ("
[lib/checkstl.cpp:1509]: (warning) Found simple pattern inside Token::findmatch() call: ";"
[lib/checkstl.cpp:1512]: (warning) Found simple pattern inside Token::findmatch() call: ";"
[lib/checkstl.cpp:1594]: (warning) Found simple pattern inside Token::Match() call: "="
[lib/checkstl.cpp:1598]: (warning) Found simple pattern inside Token::Match() call: "] ="
[lib/checkunusedvar.cpp:755]: (warning) Found simple pattern inside Token::Match() call: "goto"
[lib/checkunusedvar.cpp:793]: (warning) Found simple pattern inside Token::Match() call: "="
[lib/checkuninitvar.cpp:376]: (warning) Found simple pattern inside Token::Match() call: "> ("
[lib/checkother.cpp:86]: (warning) Found simple pattern inside Token::Match() call: "> ("
[lib/checkother.cpp:2181]: (warning) Found simple pattern inside Token::Match() call: "> {"
[lib/valueflow.cpp:54]: (warning) Found simple pattern inside Token::Match() call: "&"
[lib/valueflow.cpp:409]: (warning) Found simple pattern inside Token::Match() call: "do"
[lib/valueflow.cpp:425]: (warning) Found simple pattern inside Token::Match() call: ") {"
[lib/valueflow.cpp:487]: (warning) Found simple pattern inside Token::Match() call: ") {"
[lib/valueflow.cpp:511]: (warning) Found simple pattern inside Token::Match() call: "} else {"
[lib/valueflow.cpp:615]: (warning) Found simple pattern inside Token::Match() call: "for ("
[lib/symboldatabase.cpp:80]: (warning) Found simple pattern inside Token::Match() call: "= {"
[lib/symboldatabase.cpp:1069]: (warning) Found simple pattern inside Token::Match() call: "std ::"
[lib/tokenize.cpp:2207]: (warning) Found simple pattern inside Token::Match() call: "< >"
[lib/tokenize.cpp:2730]: (warning) Found simple pattern inside Token::Match() call: ";"
[lib/tokenize.cpp:4234]: (warning) Found simple pattern inside Token::Match() call: "try {"
[lib/tokenize.cpp:4235]: (warning) Found simple pattern inside Token::Match() call: "} catch ("
[lib/tokenize.cpp:5500]: (warning) Found simple pattern inside Token::Match() call: "INT8"
[lib/tokenize.cpp:5752]: (warning) Found simple pattern inside Token::Match() call: "}"
[lib/tokenize.cpp:5752]: (warning) Found simple pattern inside Token::Match() call: "do"
Improved checking of const functions in checkIncorrectLogicOperator
Fixed #5564 (extend std.cfg about missing functions: isalpha, tolower and toupper functions)
Fixed #4722 (Debugging enhancement: Tokenizer::simplifyTokenList() shall continue)
Merge pull request #264 from thomasjfox/simplematch

Use simple match where possible
Fixed #5563 (add __attribute__((destructor)) and improve __attribute__((constructor)) support)