Added docs for make TARGET=your_cpu_target.

README

@@ -8,7 +8,9 @@ Download from project homepage. http://xianyi.github.com/OpenBLAS/
 Or,
 check out codes from git://github.com/xianyi/OpenBLAS.git
 1)Normal compile
-Please read GotoBLAS_02QuickInstall.txt or type "make"
+  (a) type "make" to detect the CPU automatically.
+  or
+  (b) type "make TARGET=xxx" to set target CPU, e.g. "make TARGET=NEHALEM". The full target list is in file TargetList.txt.
 
 2)Cross compile
 Please set CC and FC with the cross toolchains. Then, set HOSTCC with your host C compiler. At last, set TARGET explicitly.

TargetList.txt

@@ -0,0 +1,57 @@
+Force Target Examples:
+
+make TARGET=NEHALEM
+make TARGET=LOONGSON3A BINARY=64
+make TARGET=ISTANBUL
+
+Supported List:
+1.X86/X86_64
+a)Intel CPU:
+P2
+COPPERMINE
+KATMAI
+NORTHWOOD
+PRESCOTT
+BANIAS
+YONAH
+CORE2
+PENRYN
+DUNNINGTON
+NEHALEM
+ATOM
+
+b)AMD CPU:
+ATHLON
+OPTERON
+OPTERON_SSE3
+BARCELONA
+SHANGHAI
+ISTANBUL
+
+c)VIA CPU:
+SSE_GENERIC
+VIAC3
+NANO
+
+2.Power CPU:
+POWER4
+POWER5
+POWER6
+PPCG4
+PPC970
+PPC970MP
+PPC440
+PPC440FP2
+CELL
+
+3.MIPS64 CPU:
+SICORTEX
+LOONGSON3A
+
+4.IA64 CPU:
+ITANIUM2
+
+5.SPARC CPU:
+SPARC
+SPARCV7
+