Port to GNU Make 03ecd94488b85adc38746ec3e7c2a297a522598e

Port to GNU Make 03ecd94488b85adc38746ec3e7c2a297a522598e

Problem reported by Collin Funk (Bug#68996).
* GNUmakefile (.): New macro.
(help): Use ‘$.’ instead of ‘$ ’.
* cross/verbose.mk.android, src/verbose.mk.in (.): New macro.
(AM_V_AR, AM_V_CC, AM_V_CXX, AM_V_CCLD, AM_V_CXXLD, AM_V_GEN):
Use ‘$.’ instead of ‘$ ’.
* lib-src/Makefile.in (install): Use ‘$.’ instead of ‘$ ’.

(cherry picked from commit 8d09e1def55e57a8c627ba704289f796c48a085d)