copy hahn banach from old branch, does not compile yet

Author: affeldt-aist

_CoqProject

@@ -132,6 +132,8 @@ theories/kernel.v
 theories/pi_irrational.v
 theories/gauss_integral.v
 
+theories/hahn_banach_theorem.v
+
 theories/all_analysis.v
 
 theories/showcase/summability.v

theories/Make

@@ -94,6 +94,9 @@ ftc.v
 hoelder.v
 probability.v
 convex.v
+
+hahn_banach_theorem.v
+
 charge.v
 kernel.v
 pi_irrational.v