Fix integer.hpp so a compiler error is generated when the number of bits requested is greater than the max available.
Added new tests to catch this case.
Fix PDF install rule so that it's explicit and automatically invokes a PDF build when specified on the command line.
So "bjam pdfinstall" will now build and install the PDF to the current directory.
This works around some problems that the previous versions had if the user did not have an FO processor installed (basically Daniel James was unable to build the HTML docs for the distribution if the pdfinstall rule was implicit).
Extracted intptr_t and uintptr_t types to cstdint.hpp. Refs #7823.
Patch for recent versions of glibc which always assume int64_t support.
Fixes #8731.