rebase

Fix install name on osx again

Nightly homebrew check

Fix ISMIN and ISMAX kernel choices for POWER8

to fix utest failure in new ismin test -  Makefile.L1 defaults look wrong

Also, add comments to clarify what the test is testing

Fix building on osx

rebase

Fix iamax sse implementation and add utests

The was a typo in iamax_sse.S where one of the comparison
was cmpeqps instead of cmpeqss. That misdetected index
for sequences where the minimum value was 0.

Restore -march flag for Android builds

fixes #2419 - renewed discussion in #2112 suggests removal of the option was primarily aimed at non-Android builds

rebase

Make ctest verbose for drone

Add CMake related files to .gitignore.

Correct generation of GETRF files by the CMAKE build

fixes #2396

Fix pre-processed POWER8 codes and wrong conditionals in the POWER8,PPC440 and PPC970 KERNEL files

rebase

Fix inline asm in dscal: mark x, x1 as clobbered. Fixes #2408

The leaq instructions in dscal_kernel_inc_8 modify x and x1 so they
must be declared as input/output constraints, otherwise the compiler
may assume the corresponding registers are not modified.