Not sure if this apart of the ISO standard, so make sure its not misrepresented

And of course, some of them fail miserably

Currently kind_of fails miserably, still looking for the reason

prepend.

thus "S!" means String|nil type. you have to check nil before
dereferencing the value.  this is added to address #2882 while
keeping code simplicity. besides that current #2882 fix lose
polymorphism provided by mrb_get_args().

Note: arguments of mrb_no_method_error() has changed. You need to replace
3rd and 4th argument (say n, argv) to mrb_ary_new_from_values(mrb, n, argv).

Patching array join

implement llround. some platform (ex: mingw32) doesn't have llround.

Coverity: fix dangling pointer

fix androideabi cross-compile error : undefined reference to 'frexpl'

Fix typo in comment in String#mrb_cstr_to_inum

Fix incorrect memory allocation of mrdb_state_new.

Coverity: fix oob write by actually truncating buffer

Coverity: fix missing break in switch defects

CID 75872 (#3-2 of 3): Pointer to local outside scope (RETURN_LOCAL)
38. use_invalid: Using p, which points to an out-of-scope variable buf.

Found by Coverity scan of polyfox-moon:
CID 121927 (#1 of 1): Out-of-bounds write (OVERRUN)

As detected in a Coverity scan. https://scan8.coverity.com/reports.htm#v26153/p11375/fileInstanceId=6844472&defectInstanceId=2516000&mergedDefectId=75866

src/print.c: rewrite printstr() to get rid of code duplication