dev-R/ps: respect LDFLAGS

Closes: https://bugs.gentoo.org/794112
Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

dev-R/ps/files/ps-respect-LDFLAGS.patch

@@ -0,0 +1,15 @@
+--- a/src/Makevars.in
++++ b/src/Makevars.in
+@@ -8,10 +8,10 @@
+ all: px @TARGETS@ $(SHLIB)
+ 
+ px: px.c
+-	$(CC) $(CFLAGS) -Wall px.c -o px
++	$(CC) $(CFLAGS) $(LDFLAGS) -fPIE -Wall px.c -o px
+ 
+ interrupt: interrupt.c
+-	$(CC) $(CFLAGS) -Wall interrupt.c -o interrupt
++	$(CC) $(CFLAGS) $(LDFLAGS) -fPIE -Wall interrupt.c -o interrupt
+ 
+ clean:
+ 	rm -rf $(SHLIB) $(OBJECTS) px.exe px interrupt.exe interrupt