Make the series' public headers compile on their own

check-toolchain-contract compiles every public header by itself, and two
of them do not: <ndbm.h> uses __BEGIN_DECLS and mode_t while including
nothing, and <semaphore.h> declares sem_open() with mode_t and
sem_timedwait() with struct timespec the same way. Both were already
like that in 2026.08.0, which is what a patch is for; the check is new
infrastructure that had never been pointed at these sources.

newlib carries upstream's own line from 4.6, backported onto vita-4.1,
which leaves that header byte for byte what 4.6 ships. pthread-embedded
needed no branch at all: the only commit between the pin this series
shipped and the one on the development branch is exactly this fix,
touching exactly this header, so the pin simply moves forward.

Author: frangarcj

cmake/Components.cmake

@@ -69,10 +69,10 @@ set(VDPM_REPOSITORY https://github.com/vitasdk/vdpm.git
 set(VITA_MAKEPKG_REPOSITORY https://github.com/vitasdk/vita-makepkg.git
     CACHE STRING "vita-makepkg repository URL or local path")
 
-set(NEWLIB_TAG 6cba98129f0a286949391de00519ef39762eff18 CACHE STRING "newlib branch, commit id or tag")
+set(NEWLIB_TAG 64aa7aa33d4f380451a1f100d19589226cdad334 CACHE STRING "newlib branch, commit id or tag")
 set(SAMPLES_TAG fe8fbef570f3280586c0c20157146e3faefb2181 CACHE STRING "samples branch, commit id or tag")
 set(HEADERS_TAG ebc8f4f7ac8313fe4f74ca95724116b224bad184 CACHE STRING "vita-headers branch, commit id or tag")
 set(TOOLCHAIN_TAG c527abce028df33f5281e9ed4994c25fcef53c7d CACHE STRING "vita-toolchain branch, commit id or tag")
-set(PTHREAD_TAG 610934f4841f02a42f19f0e8b0f01bb38b375dfc CACHE STRING "pthread-embedded branch, commit id or tag")
+set(PTHREAD_TAG 11d2e5722d98c86f33c908fc47b2cf6e55205db5 CACHE STRING "pthread-embedded branch, commit id or tag")
 set(VDPM_TAG v0.1.3 CACHE STRING "vdpm branch, commit id or tag")
 set(VITA_MAKEPKG_TAG 32f863c2a58a801b7d5a0296bdbbb443c9676e08 CACHE STRING "vita-makepkg branch, commit id or tag")