[tests] run console.set to validate it's there
[js] toString: add tsn_itoa() utility function for converting from integers to strings
[js] toString(): use signed printing in tsn_itoa()
[tests] print negative fp number
[js] support radix in .toString() operations (integers only)
[js] toString(): support tsn_itoa() with arbitraty radix
[graphics] add bitmap draw function
[js] fix invalid pointer assignment
Merge branch 'master' into coverity_scan