deb and rpm packages should install to /usr regardless of what prefix is set to.
This allows making packages along side development without having to set special variables.
correct incorrect logic from previous change
corrections to bounding box calculations to fix issues with text and soundings in accelerated pans
int for keycodes type because char is unsigned on arm processors
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN
avoid drawing chart outline when the chart covers the entire world
bounding box meridian fixes
base initial bounding box on chart scale rather than fixed value
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN
Need to apply this when opencpn uses path relative to the binary to search
Revert "deb and rpm packages should install to /usr regardless of what prefix is set to."

This reverts commit fb91230f0f376616b3dcc9cbd5d8182a71fe8dad.
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN
Merge pull request #139 from seandepagnier/master

I have made several corrections to the vector chart rendering