Drop unnecessary execution permission for .cpp/.c/.h

Change-Id: I9ac2b9d8f6bdb4fab8962210c5ec8f9c3e8c0ebf
diff --git a/libc/arch-x86/bionic/__get_tls.c b/libc/arch-x86/bionic/__get_tls.c
old mode 100755
new mode 100644
diff --git a/libc/arch-x86/bionic/__set_tls.c b/libc/arch-x86/bionic/__set_tls.c
old mode 100755
new mode 100644
diff --git a/libc/arch-x86/bionic/__stack_chk_fail_local.h b/libc/arch-x86/bionic/__stack_chk_fail_local.h
old mode 100755
new mode 100644
diff --git a/libc/arch-x86/bionic/crtbegin.c b/libc/arch-x86/bionic/crtbegin.c
old mode 100755
new mode 100644
diff --git a/libc/arch-x86/bionic/crtbegin_so.c b/libc/arch-x86/bionic/crtbegin_so.c
old mode 100755
new mode 100644
diff --git a/libc/kernel/common/linux/msm_q6venc.h b/libc/kernel/common/linux/msm_q6venc.h
old mode 100755
new mode 100644
diff --git a/libdl/dltest.c b/libdl/dltest.c
old mode 100755
new mode 100644
diff --git a/linker/arch/x86/begin.c b/linker/arch/x86/begin.c
old mode 100755
new mode 100644
diff --git a/linker/linker.cpp b/linker/linker.cpp
old mode 100755
new mode 100644