Added precision and variable precision#11

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HansAnderson wants to merge 7 commits intocjlano:masterfrom

HansAnderson:master

Commits on Nov 28, 2015

Added C .gitignore
Hans Anderson
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Moved newlines into TPRINTF macro for printf tests
Hans Anderson
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Synchronized test cases in printf.c and sprintf.c
Hans Anderson
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Added precision support
Hans Anderson
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Added argument defined width/precision (using '*')
Hans Anderson
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Simplified integer precision handling
Hans Anderson
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Made precision and '*' specifiers conform to C99 specifications
Hans Anderson
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