make: replace MAKEBASE with RIOTBASE

closes https://github.com/RIOT-OS/RIOT/issues/959

Makefile.modules

-export MAKEBASE =$(RIOTBASE)
 UNDEF += $(BINDIR)startup.o
 
 include $(RIOTBASE)/Makefile.pseudomodules

cpu/arm_common/Makefile.include

-INCLUDES += -I$(MAKEBASE)/cpu/arm_common/include/
+INCLUDES += -I$(RIOTBASE)/cpu/arm_common/include/
 
 export UNDEF += $(BINDIR)syscalls.o

cpu/cc430/Makefile.include

-INCLUDES += -I$(MAKEBASE)/cpu/cc430/include/
+INCLUDES += -I$(RIOTBASE)/cpu/cc430/include/
 
 include $(RIOTCPU)/msp430-common/Makefile.include

cpu/lpc1768/Makefile.include

-INCLUDES += -I$(MAKEBASE)/cpu/lpc1768/include
+INCLUDES += -I$(RIOTBASE)/cpu/lpc1768/include
 
 export UNDEF += $(BINDIR)syscalls.o

cpu/lpc2387/gpioint/Makefile

 MODULE =gpioint
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/lpc2387/i2c/Makefile

 MODULE =i2c
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/lpc2387/mci/Makefile

 MODULE =mci
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/lpc2387/rtc/Makefile

 MODULE =rtc
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/mc1322x/Makefile.include

-INCLUDES += -I$(MAKEBASE)/cpu/mc1322x/include
+INCLUDES += -I$(RIOTBASE)/cpu/mc1322x/include
 
 include $(RIOTCPU)/arm_common/Makefile.include
 

cpu/mc1322x/adc/Makefile

@@ -2,4 +2,4 @@ INCLUDES = -I$(RIOTBASE)/cpu/mc1322x/adc/include
 
 MODULE =mc1322x_adc
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/mc1322x/asm/Makefile

@@ -2,4 +2,4 @@ INCLUDES = -I$(RIOTBASE)/cpu/mc1322x/asm/include
 
 MODULE =mc1322x_asm
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/mc1322x/maca/Makefile

@@ -2,4 +2,4 @@ INCLUDES = -I$(RIOTBASE)/cpu/mc1322x/include -I$(RIOTBASE)/cpu/mc1322x/maca/incl
 
 MODULE =mc1322x
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

cpu/msp430-common/Makefile.include

-INCLUDES += -I$(MAKEBASE)/cpu/msp430-common/include/
+INCLUDES += -I$(RIOTBASE)/cpu/msp430-common/include/

cpu/native/net/Makefile

 MODULE = nativenet
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base
 
 $(BINDIR)%.o: %.c
 	$(AD)$(CC) $(CFLAGS) $(NATIVEINCLUDES) -c $*.c -o $(BINDIR)$*.o

cpu/native/rtc/Makefile

 MODULE =rtc
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base
 
 $(BINDIR)%.o: %.c
 	$(AD)$(CC) $(CFLAGS) $(NATIVEINCLUDES) -c $*.c -o $(BINDIR)$*.o

drivers/cc110x/Makefile

 MODULE =cc110x
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

drivers/cc110x_ng/spi/Makefile

@@ -2,4 +2,4 @@ MODULE =cc110x_spi
 
 INCLUDES += -I$(RIOTBASE)/drivers/cc110x_ng
 
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

drivers/lm75a/Makefile

 MODULE =lm75a
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

drivers/ltc4150/Makefile

 MODULE =ltc4150
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base

drivers/sht11/Makefile

 MODULE =sht11
-include $(MAKEBASE)/Makefile.base
+include $(RIOTBASE)/Makefile.base