Possible misbehaviour due to lack of parentheses

[Jan Dubiec]

I do not know Hugin's code very well but fixing these warnings should be trivial for someone who does:

d:/Works/Hugin/src/hugin_base/nona/Stitcher.cpp: In function 'void HuginBase::Nona::stitchPanorama(const HuginBase::PanoramaData&, const HuginBase::PanoramaOptions&, AppBase::ProgressDisplay*, const string&, const UIntSet&, const AdvancedOptions&)':
d:/Works/Hugin/src/hugin_base/nona/Stitcher.cpp:97:38: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         if (bands == 1 || bands == 2 && extraBands == 1) {
                                      ^
d:/Works/Hugin/src/hugin_base/nona/Stitcher.cpp:99:45: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         } else if (bands == 3 || bands == 4 && extraBands == 1) {
                                             ^
d:/Works/Hugin/src/hugin_base/nona/Stitcher.cpp:107:38: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         if (bands == 1 || bands == 2 && extraBands == 1) {
                                      ^
d:/Works/Hugin/src/hugin_base/nona/Stitcher.cpp:116:45: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         } else if (bands == 3 || bands == 4 && extraBands == 1) {

=============================================================================

d:/Works/Hugin/src/hugin_base/panodata/Panorama.cpp: In member function 'bool HuginBase::PanoramaMemento::loadPTScript(std::istream&, int&, const string&)':
d:/Works/Hugin/src/hugin_base/panodata/Panorama.cpp:2949:45: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if (iImgInfo[i].links[*v] == -2 && oImgInfo[i].links[*v] != -2 || iImgInfo[i].links[*v] == -1 && oImgInfo[i].links[*v] >=0) {

=============================================================================

d:/Works/Hugin/src/tools/cpclean.cpp: In function 'int main(int, char**)':
d:/Works/Hugin/src/tools/cpclean.cpp:243:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
     if(!onlyPair)
       ^

[tmodes (tmodes)]

Only one of the mentioned warnings is true. The other ones are false positive: && has higher precedence then ||. So the expressions are correct c++.
Nevertheless I added parentheses to improve readability.