add ?LANGB interface (Reference-LAPACK PR725)

cmake/lapacke.cmake

@@ -318,6 +318,8 @@ set(CSRC
   lapacke_clacn2.c
   lapacke_clag2z.c
   lapacke_clag2z_work.c
+  lapacke_clangb.c
+  lapacke_clangb_work.c
   lapacke_clange.c
   lapacke_clange_work.c
   lapacke_clanhe.c
@@ -803,6 +805,8 @@ set(DSRC
   lapacke_dlag2s_work.c
   lapacke_dlamch.c
   lapacke_dlamch_work.c
+  lapacke_dlangb.c
+  lapacke_dlangb_work.c
   lapacke_dlange.c
   lapacke_dlange_work.c
   lapacke_dlansy.c
@@ -1381,6 +1385,8 @@ set(SSRC
   lapacke_slag2d_work.c
   lapacke_slamch.c
   lapacke_slamch_work.c
+  lapacke_slangb.c
+  lapacke_slangb_work.c
   lapacke_slange.c
   lapacke_slange_work.c
   lapacke_slansy.c
@@ -2089,6 +2095,8 @@ set(ZSRC
   lapacke_zlacrm_work.c
   lapacke_zlag2c.c
   lapacke_zlag2c_work.c
+  lapacke_zlangb.c
+  lapacke_zlangb_work.c
   lapacke_zlange.c
   lapacke_zlange_work.c
   lapacke_zlanhe.c